Sine saturation transform
First Claim
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1. A signal processing system for processing, at least one physiological signal obtained from at least one physiological sensor and computing at least one physiological measurement, the signal processing system comprising:
- at least one input configured to accept at least one physiological signal obtained from at least one physiological sensor;
at least one basis function index calculator configured to determine at least one basis function index from the at least one physiological signal;
at least one basis function waveform generator configured to generate at least one basis function waveform according to the at least one basis function index;
at least one optimization calculator configured to determine one or more optimized basis function waveforms.
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Abstract
A transform for determining a physiological measurement is disclosed. The transform determines a basis function index from a physiological signal obtained through a physiological sensor. A basis function waveform is generated based on basis function index. The basis function waveform is then used to determine an optimized basis function waveform. The optimized basis function waveform is used to calculate a physiological measurement.
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Citations
19 Claims
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1. A signal processing system for processing, at least one physiological signal obtained from at least one physiological sensor and computing at least one physiological measurement, the signal processing system comprising:
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at least one input configured to accept at least one physiological signal obtained from at least one physiological sensor;
at least one basis function index calculator configured to determine at least one basis function index from the at least one physiological signal;
at least one basis function waveform generator configured to generate at least one basis function waveform according to the at least one basis function index;
at least one optimization calculator configured to determine one or more optimized basis function waveforms. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A signal processing method for processing, in the time domain, at least one physiological signal obtained from at least one physiological sensor and computing at least one physiological measurement, the signal processing method comprising:
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obtaining at least one physiological signal from at least one physiological sensor;
determining at least one basis function index from the at least one physiological signal;
generating at least one basis function waveform according to the at least one basis function index;
determining at least one optimized basis function waveform. - View Dependent Claims (13, 14)
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15. A sine saturation transform method for filtering a physiological signal, the sine saturation transform method comprising:
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obtaining a signal comprising pulse rate information;
segmenting the signal into at least one pulse rate cycle;
determining at least one sinusoidal wave that upon combination produces a predetermined response;
filtering the signal based on a frequency of the at least one sinusoidal wave; and
calculating a physiological parameter from the filtered signal. - View Dependent Claims (16, 17, 18, 19)
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Specification